<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>15.16.DOM-节点操作-删除节点</title>
</head>

<body>
    <button>删除</button>
    <ul>
        <li>熊大</li>
        <li>熊二</li>
        <li>光头强</li>
        <script>
            // 1.获取元素
            var ul = document.querySelector('ul');
            var btn = document.querySelector('button');
            // 2.删除元素 node.removeChild(child);
            // ul.removeChild(ul.children[0]);
            // 3.点击按钮依次删除里面的孩子
            btn.onclick = function () {
                if (ul.children.length == 0) {
                    this.disabled = 'true';
                } else {
                    ul.removeChild(ul.children[0]);
                }
            }
        </script>
    </ul>
</body>

</html>